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Top-Rated Water treatment pros in National City - Updated Nov 2026

Avatar for So Cal Water Systems
So Cal Water Systems
4.6(
183
)
Water Treatment & Purification System - Install or ReplaceWater Treatment & Purification System - Repair or Service

Serving National City, CA and surrounding areas

Approved

In business since 1993

Free estimates

Credit card accepted

"So Cal Water was the first call we got about our project. It only took them about 5 mins. to call! They estimated that it would only take an hour to install our reverse osmosis system and quoted a fair price on the phone, so we hired them. A problem did occur when the plumber did NOT show up during the agreed window of time, and it took a call to the office to find out that he was running about an hour late. We were given the option of rescheduling, but the later time was not a problem for us. When he did arrive, he was polite and efficient and completed the job in LESS time than was quoted, so charged us accordingly. So overall, this was a good experience."
OUR WORK
OUR WORK
OUR WORK
OUR WORK
OUR WORK

+1

Response time1 day
10 neighbors recently requested a quote
Recommended by80%of homeowners
Avatar for Forthright Plumbing Pros, Inc.
Forthright Plumbing Pros, Inc.
4.8(
68
)
Water Treatment & Purification System - Repair or Service

Serving National City, CA and surrounding areas

Approved

In business since 2013

Free estimates

Emergency services offered

"Leo reached out to me immediately upon receiving my request through Angi. I told him what happened and he advised that he would contact a leak detection company ASAP and let me know when they would arrive. He did as promised and we had that company at our house within the hour (on a Saturday, no less). We spoke to that person for a good while about the different steps we could take and decided what was right for us. During this time, Leo texted to check on us and the outcome. I sent him the pictures of the issue and he gave me a reasonable price for the fix. He immediately came over to get our leak fixed so that we would not be without water over the weekend. Leo was pleasant, responsive and punctual. If we need any plumbing issues in the future, we will definitely call Forthright and will recommend him to our friends and family! Thank you Leo!"
Front view
Completed Project
New shut off valve, supply hoses, and flue vent
T & P drain
Drain terminates

+2

Response time7 hrs
Response rate94%
7 neighbors recently requested a quote
Avatar for Plumbing Plus
Plumbing Plus
4.5(
530
)
Water Treatment & Purification System - Install or ReplaceWater Treatment & Purification System - Repair or Service

Serving National City, CA and surrounding areas

Approved

In business since 1984

Free estimates

Emergency services offered

"My water heater went out, needed it replaced the same day, called plumbing Plus in the morning, had it fully installed water heater with the old one gone by noon. Robert answered all of my questions and concerns. If I have any other plumbing jobs I will call on them. Robert was knowledgeable, efficient, and friendly."
New Sewer Pipe Installation
Always important to clean up after ourselves
Tricky Sewer Pipe Installation
New Sewer Pipe Installation
Ladders and lifts to access the pipe overhead

+37

Response time1 day
Response rate100%
1 neighbors recently requested a quote
Bob Jenson Air Conditioning Inc.
4.9(
169
)
Water Treatment & Purification System - Install or ReplaceWater Treatment & Purification System - Repair or Service

Serving National City, CA and surrounding areas

Approved

In business since 1977

Free estimates

Customers say: Quality work

Service, Quality, Comfort. Consistently delivering the best Service and Installation experience in San Diego since 1977. Log in to view what Angie's List Members are saying about us and get exclusive member discounts! Our estimates on a new installation or replacement are always Free! \nOur Certified Technicians service all brands of equipment. We have COVID-19 Protocols in place for your safety and ours! Friendly, Knowledgeable Staff is here to help! Flexible Financing OAC Available. Call Us Today!

18 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Carini Home Services
Carini Home Services
4.7(
381
)
Water Treatment & Purification System - Install or ReplaceWater Treatment & Purification System - Repair or Service

Serving National City, CA and surrounding areas

Approved

In business since 2006

Free estimates

Emergency services offered

"They were ready to come out whenever I wanted them to. I would absolutely use them in the future. The technician came out and he was excellent. He went out of his way to explain the system to me. He explained why things work and what's going on when I'm seeing this and that. He was excellent. I would ask for that guy specifically next time."
Using the sewer camera to inspect the inside of a customer's drains
Camera inspection through a sewer vent on a customer's roof
Hydro jet uses water at 4,000psi to clean the inside of the mainline drain which connects all the home's drains to the city's sewer system.
Using a snake we can go through the cleanouts on the side of the house.
With the cleanouts snaked, and the blockage located, we can send the hydro jet through the sewer vent and flush out the blocked drain.

+16

Response time10 mins
11 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Gorilla Plumbing
Gorilla Plumbing
5.0(
14
)
Water Treatment & Purification System - Repair or Service

Serving National City, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2019

Free estimates

Emergency services offered

"Best experience replacing a water heater! Mickey was very professional and worked efficiently to replace our old water heater. He took the time to go over the estimate (priced fairly and competitively) and made sure that we had the equipment we needs for our household needs. He made sure that we also were brought up to code since our set up was fairly old. The experience was smooth and stress-free from start to finish. I would highly recommend Mickey and Gorilla Plumbing for future plumbing projects!"
Traditional Water Heater
Traditional Water Heater
Traditional Water Heater
Water Supply
New System

+12

Response time8 hrs
Response rate100%
Avatar for Pro Bright Construction Inc
Pro Bright Construction Inc
4.8(
25
)
Water Treatment & Purification System - Install or ReplaceWater Treatment & Purification System - Repair or Service

Serving National City, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2022

Free estimates

Emergency services offered

"I had an excellent experience with Pro Bright Construction. They responded to my initial inquiry very quickly and were able to schedule the installation of a whole-home water flow restrictor on the main water intake that same day. The two professionals who completed the work were friendly, knowledgeable, and courteous. Although this was a significant installation, they finished the job in just a couple of hours and left the work area spotless. I was quoted a price by a large plumbing company that was nearly twice the amount I paid, so I also appreciate Pro Bright's very fair pricing. I'm left truly happy for their prompt response, professionalism, quality workmanship, and value. I will definitely contact Pro Bright Construction for any future plumbing needs and highly recommend them."
Response time5 hrs
Response rate98%
53 neighbors recently requested a quote
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